| Variables | Category | Percentage (no. of Pos/total) | COR (95% CI) | value | AOR (95% CI) | value |
| Sex | Male | 25.5 (26/102) | 1.2 (0.6, 2.26) | 0.578 | | | Female | 22.2 (24/108) | 1 | 1 | | |
| Level of education | No formal education | 21.9 (7/32) | 1.36 (0.4, 4.3) | 0.460 | | | Elementary and secondary | 26.3 (36/137) | 1.7 (0.7, 4.2) | 0.444 | | | Degree and above | 17.1 (7/41) | 1 | 1 | | |
| Age (in years) | ≤35 | 24.4 (30/123) | 1.08 (0.56, 2.06) | 0.814 | | | >35 | 23.0 (20/87) | 1 | 1 | | |
| The habit of washing teat | No | 72.0 (36/50) | 26.8 (11.7, 61) | <0.0001 | 77.3 (11.5,516) | <0.0001 | Yes | 8.8 (14/160) | 1 | 1 | 1 | |
| Washing teat with detergent | No | 37.5 (42/112) | 6.75 (2.98, 15) | <0.0001 | 0.9 (0.17, 4.64) | 0.895 | Yes | 8.2 (8/98) | 1 | 1 | 1 | |
| Washing teat with only tap water | Yes | 45.1 (32/71) | 5.5 (2.79, 10.9) | <0.0001 | 26.1 (5.5, 123.5) | <0.0001 | No | 12.9 (18/139) | 1 | 1 | 1 | |
| Separate place for milking cow | No | 48.6 (36/74) | 8.25 (4.0, 16.9) | <0.0001 | 1.1 (0.21, 5.37) | 0.949 | Yes | 10.3 (14/136) | 1 | 1 | 1 | |
| Storage method before selling milk | Room temperature | 27.9 (34/122) | 1.7 (0.889, 3.4) | 0.104 | | | Use of refrigerator | 18.2 (16/88) | 1 | 1 | | |
| Washing hands before milking | No | 48.6 (36/77) | 7.5 (3.7, 15.2) | 0.002 | 3.5 (0.86, 14.02) | 0.080 | Yes | 10.3 (14/133) | 1 | 1 | 1 | |
| Separate cloth is worn during milking | No | 46.0 (40/87) | 9.6 (4.4, 20.8) | 0.001 | 39.98 (8.2, 196.0) | <0.0001 | Yes | 8.1 (10/123) | 1 | 1 | 1 | |
| The practice of testing milk for bacterial contamination | No | 19.3 (31/161) | 0.37 (0.19, 0.8) | 0.005 | 0.19 (0.04, 0.83) | 0.027 | Yes | 138.8 (19/49) | 1 | 1 | 1 | |
| Separate vending environment | No | 53.1 (26/49) | 6.45 (3.2, 13.1) | <0.0001 | 8.4 (1.11, 63.4) | 0.039 | Yes | 14.9 (24/161) | 1 | 1 | 1 | |
| Sweeping vending environment | No | 50.8 (33/65) | 7.76 (3.8, 15.6) | <0.0001 | 0.3 (0.04, 2.08) | 0.223 | Yes | 11.7 (17/145) | 1 | 1 | 1 | |
| Separate waste disposal | No | 34.4 (31/90) | 2.79 (1.45, 5.4) | 0.002 | 1.69 (0.337, 8.5) | 0.523 | Yes | 15.8 (19/120) | 1 | 1 | 1 | |
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